...I no longer know the way OUT of Aikido, short of dying. (And that's not a final answer, either.)
I know that, even if I reach another point in my life where I'm not actively being thrown or throwing people around in a dojo, I will still be doing Ai-Ki-Do. It's a way I've long since committed to, and one I am incapable of walking away from. It dosn't require a physical attack to manifest it -- it is always there, within me.
Plus all of the neat stuff the other folks have said rings a fine tone in my soul, too.